Catalase is a tetramer of four polypeptide chains, each over 500 amino acids long.It contains four porphyrin heme (iron) groups that allow the enzyme to react with the hydrogen peroxide.The optimum pH for human catalase is approximately 7, and has a fairly broad maximum (the rate of reaction does not change appreciably at pHs between 6.8 and 7.5).atalase is a tetramer of four polypeptide chains, each over 500 amino acids long.
Josh Duhamel. Joshua David Josh Duhamel (/dÉËmÉl/ dÉ-MEL; born November 14, 1972) is an American actor and former fashion model. After various modeling work, he made his acting debut as Leo du Pres on the ABC daytime soap opera All My Children and later starred as Danny McCoy on NBC's Las Vegas.
Fergie and Josh Duhamel make up quite the power couple: Fergieâs net worth is $30 million, while Joshâs is $15 million. At a combined net worth of $45 million, the coupleâs only child, Axl Jack, is definitely one of the richest babies in Hollywood. Axl was only born in August of 2013, so this little tyke thatâs almost a year and a half old, is one of the youngest children on this list.